China Leading Synthetic Gear Oil Exporter & Service

Premium High-Tech Industrial Lubricants Engineered for Maximum Efficiency, Wear Protection, and Severe Operating Conditions Globally.

High-Performance Gear & Motor Lubricants Portfolio

Explore our leading collection of certified synthetic oils engineered for modern high-load machinery and high-performance engines.

Wholesale Premium SL Gasoline Engine Oils

Wholesale Premium SL Gasoline Engine Oils - Advanced Protection for Modern Engines Exporter, Exporters

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China Longhai Heavy-Duty Gear Oil

China Longhai Heavy-Duty Gear Oil – Ultimate Protection for Extreme Conditions Supplier, Service

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Wholesale High-performance worm gear oil

Wholesale High-performance worm gear oil - professional lubrication solution Suppliers, Exporters

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China Four-stroke motorcycle special oil

China Four-stroke motorcycle special oil - Ultimate power protection expert Suppliers, Exporter

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China Longhai Hydraulic Transmission Fluid

China Longhai Premium Hydraulic Transmission Fluid – Optimized Performance for Smooth Operation Supplier, Exporter

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China refrigeration oil

China Professional-grade refrigeration oil - providing excellent protection for refrigeration systems Exporters, Service

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China Premium SN Grade Fully Synthetic Motor Oil

China Premium SN Grade Fully Synthetic Motor Oil - The Ultimate Protection for Modern Engines Suppliers, Supplier

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Wholesale Longhai Anti-Wear Hydraulic Oil

Wholesale Longhai Premium Anti-Wear Hydraulic Oil – Superior Protection for Industrial Applications Suppliers, Service

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📖Scientific Foundations of Synthetic Gear Lubrication

A technical whitepaper examining chemical compositions, shear-stability, and efficiency improvements in modern industrial gearboxes.

In modern industrial manufacturing and transportation sectors, heavy machinery is subjected to increasingly higher operating stresses. Conventional mineral gear oils are reaching their mechanical limits, particularly under extreme heat, high pressure, and heavy load conditions. As a leading manufacturer of synthetic gear oils, Shandong Longhai Lubrication Technology Development Co., Ltd. focuses on the synthesis of Polyalphaolefin (PAO), Polyalkylene Glycol (PAG), and high-grade ester base fluids coupled with state-of-the-art additive packages. This chemical optimization yields a synthetic gear oil that ensures superior oxidative stability and micropitting resistance.

Synthetically synthesized base oils offer significant advantages over mineral counterparts because they lack the natural impurities such as paraffinic waxes and sulfur compounds that lead to early fluid degradation. The absence of wax guarantees outstanding low-temperature fluidity, ensuring immediate lubrication during cold start-ups in sub-zero climates down to -45°C. At the opposite end of the spectrum, the high Viscosity Index (VI) of synthetic gear oils prevents viscosity thinning under intense operational heat, maintaining a robust elastohydrodynamic lubrication (EHL) film between gear teeth.

Key Research Insight: Industrial testing has demonstrated that replacing standard mineral gear lubricants with optimized synthetic alternatives can reduce gearbox operating temperatures by 5°C to 12°C. This temperature drop reduces the rate of oil oxidation by nearly 50%, effectively doubling fluid service life while lowering total energy consumption across high-load processing plants.

In critical components like industrial planetary gearboxes, wind turbine main drives, and heavy-duty worm gears, synthetic gear oils actively prevent micropitting—a microscopic fatigue phenomenon that eventually triggers macro-pitting and gear teeth failure. Using premium anti-wear (AW) and extreme pressure (EP) chemical additives, our synthetic gear oil reacts with metal surfaces to build a protective barrier that reduces friction coefficients, ensures smooth load transfers, and limits gear tooth wear even under sudden shock loading conditions.

15+
Years R&D Experience
200K
Tons Annual Production Capacity
131
Acres Manufacturing Base
1‰-2‰
Filling Precision Accuracy

🏭About Shandong Longhai Lubrication Technology

Shandong Longhai Lubrication Technology Development Co., Ltd. was established in 2009 and is headquartered in Zibo, Shandong. It is a high-tech enterprise integrating R&D, production and sales. The company has been deeply involved in the lubricant industry for more than 15 years, has built a complete industrial chain system, and is committed to providing high-quality lubrication solutions for the global industrial and transportation fields.

As a reliable lubricant manufacturer in the industry, Longhai Technology owns its own brand "Century Longhai" and the international strategic cooperation brand British "A Ba" series of products. The products cover diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, special engine oil for engineering machinery, special oil for natural gas, full synthetic oil, automotive urea solution, antifreeze, special engine oil for motorcycles, industrial oil, automatic transmission oil and many other lubricant varieties. The brand is insured by PICC China People's Insurance Company and quality insurance.

Shandong Longhai Lubrication Factory Facility

Leading-Edge Chinese Manufacturing Advantages

How our factory integrates technological innovation, capacity, and precision to deliver global competitive advantages.

In the global market, China has transitioned from a high-volume manufacturer to a high-precision, innovation-driven industrial powerhouse. Shandong Longhai Lubrication Technology exemplifies this paradigm shift. By allocating over 5% of our annual revenue directly into lubrication R&D, we continuously partner with major domestic universities and petrochemical research institutions to optimize synthetic formulations. Our 131-acre manufacturing facility utilizes cutting-edge blending technologies and fully automatic filling machinery that operate with a volume accuracy of 1‰-2‰. This high level of precision minimizes physical waste and guarantees product consistency from one batch to the next.

Furthermore, our automated packaging infrastructure increases overall filling speeds by 20% to 35%, ensuring high output during periods of high demand. For global industrial buyers, this translates directly to shorter lead times, consistent product delivery, and competitive bulk pricing. By controlling the entire manufacturing chain in Zibo—the manufacturing heartland of Shandong province—we enjoy unparalleled access to raw synthetic bases and chemical inputs. This logistics and sourcing network protects our international partners from supply-chain interruptions and volatile pricing shocks.

Automated Blending Plant

Automated Blending System

Utilizes PLC automated metering for precise formulation matching.

Precision filling line

Precision Filling Line

Maintains a strict filling precision of 1‰-2‰ across all formats.

R&D Laboratories

Analytical Testing Laboratory

Equipped with ASTM testing systems to inspect viscosity index, pour points, and foaming behavior.

🁰Global Industrial Applications & Case Studies

Bespoke lubrication engineering addressing severe operational environments globally.

Different industrial fields face distinct challenges. We address these requirements with macro-industry solutions designed to extend gear and equipment lifespans:

  • Wind Power Generation: Wind turbine gearboxes operate in hard-to-reach locations under rapidly changing wind speeds and ambient temperatures. Our high-performance synthetic gear oils offer excellent shear-stability and anti-micropitting performance, lowering maintenance overheads and reducing oil drain intervals.
  • Heavy Machinery & Mining: Equipment like crushers, conveyor drives, and ball mills operate under intense dust and high load stresses. Our heavy-duty gear oils contain specialized extreme-pressure additives that prevent tooth contact wear under heavy load shocks.
  • Metallurgy & Steel Rolling Mills: Industrial gear systems in steel mills face extreme temperatures and regular water ingress. Our synthetic gear oils feature excellent water-separation (demulsibility) properties, allowing water to drain quickly and maintaining the integrity of the oil film.
  • Marine Transmissions: Sea environments demand lubricants that resist saltwater corrosion and thermal breakdown. Our marine transmission fluids are certified for severe marine gear setups, offering long-term corrosion prevention.
Heavy Gearbox Case Application
Steel Rolling Mill Application
Wind Power Application Case

💼Longhai OEM/ODM Service Customization

How we customize packaging, specifications, and formulations to help international partners build premium brand equity.

Customized Formulation

Fully synthetic and semi-synthetic lubricant formulations tailored to vehicle/equipment requirements, climatic conditions or market positioning to meet international standards such as API/ACEA.

Flexible Production

Supports small-scale trial production to large-scale production, covering engine oil, transmission oil, industrial lubricants and other full categories, filling specifications are flexible and optional.

Fully Certified Quality

Certified by ISO 9001, IATF 16949, etc., provide authoritative third-party test reports to ensure product performance and compliance.

Brand Value-Added

We offer packaging design, label printing and technical documentation support to help you build a premium brand image.

OEM ODM Filling Line Operations

🕸Our Collaborative Partnership Process

A reliable path from technical inquiry to global product delivery.

Demand Analysis

Process Arrow

Formula Development

Process Arrow

Sample Testing

Process Arrow

Production Delivery

Process Arrow

After-Sales Support

🎖Qualification Certificates & Global Compliance

Our quality system is verified by international standards and global automotive approvals.

The company has passed ISO-9001-2015 quality system certification, 14001 environmental management system certification, 18001 health management system certification. Automatic transmission Mercedes-Benz certification has laid the foundation for the healthy development of the company and the stability of product quality. The company strictly follows international standards and introduces foreign production processes and testing technologies to ensure that the products can still perform excellently under extreme working conditions, helping customers improve equipment efficiency and reduce maintenance costs.

ISO Certification Document
Quality Management Certificate
Environmental Management Certificate
Mercedes-Benz Lubricant Approval
OHSAS 18001 Health Certificate

🔬Inside Longhai: Facility & Precision Laboratories

Take a closer look at our clean blending environment, advanced analysis systems, and warehouse logistics.

Enterprise environment - Plant Exterior
Enterprise Environment
Joint Innovation Center Labs
Joint Innovation Center
Laboratory testing equipment
Laboratory Equipment
Precision Viscometers
Viscosity Testing Station
Finished goods warehouse
Logistics & Warehouse
Raw base oil tank farms
Base Oil Storage

Frequently Asked Questions & Technical Insights

Direct technical answers addressing international shipping, specifications, and lubrication chemistry.

Q1: What are the advantages of synthetic gear oil over traditional mineral gear oils?
Synthetic gear oils are formulated with chemical bases like Polyalphaolefins (PAO) or Esters, which have uniform molecules and no paraffinic wax. This chemistry provides a significantly higher Viscosity Index (VI), low-temperature pour points down to -45°C, and exceptional thermal-oxidative stability. Consequently, synthetic oils reduce friction, lower operating temperatures by 5°C to 12°C, and last 2 to 4 times longer than mineral oils under extreme pressures.
Q2: How does Shandong Longhai guarantee consistent quality across export batches?
We follow ISO 9001:2015 quality control processes. Our modern Zibo plant features automated blending systems and filling lines that control volume accuracy to within 1‰-2‰. Every batch is tested in our precision laboratory before shipment, and all products are insured by PICC (China People's Insurance Company) to protect global distributors.
Q3: Can you develop custom formulations to match specific equipment or climate profiles?
Yes. Through our OEM/ODM custom services, our R&D team works closely with global partners to design custom lubricant formulations. We can adjust synthetic base oil ratios, select specific extreme-pressure (EP) or anti-wear (AW) additives, and customize the viscosity to meet international standards (API, ACEA, DIN 51517) for hot tropical climates or freezing sub-arctic conditions.
Q4: Which heavy industries benefit most from using Longhai’s synthetic lubricants?
Our high-end synthetic oils are widely used in heavy industrial sectors, including wind energy (planetary gears), metallurgy (high-load rolling mills), mining operations (conveyor drives, crushers), marine operations (gearbox systems), and air compressor installations.
Q5: What certifications do Shandong Longhai products hold for international markets?
Our company holds ISO 9001:2015 (Quality), ISO 14001:2015 (Environment), and ISO 18001 (Occupational Health) certifications. Additionally, our transmission fluids have passed Mercedes-Benz approvals, ensuring compliance with strict European automotive standards.
Q6: How do synthetic gear oils prevent micropitting in high-load gearboxes?
Micropitting occurs under cyclic stress when the lubrication film breaks down. Our synthetic gear oils build a strong elastohydrodynamic lubrication (EHL) film and use advanced polar anti-wear additives. These additives chemically bond to gear surfaces to prevent metal-on-metal friction and micropitting fatigue under heavy loads.
Q7: What is the typical lead time and shipping process for bulk export orders?
Because our automated production lines run 20% to 35% faster than standard operations, our typical lead time is 15 to 30 days after order confirmation. We package our lubricants in various options, including 1L/4L bottles, 200L drums, and IBC containers, and ship them via nearby ports like Qingdao to destinations globally.
Q8: What is the shelf life and correct storage method for synthetic gear oils?
When stored in its sealed original container in a dry, covered area between -20°C and 40°C, our synthetic gear oil has a shelf life of up to 5 years. Keeping containers sealed prevents moisture ingress, which can break down ester-based synthetics.

🛢Advanced Heavy-Duty Industrial & Automotive Oils

Select specialized diesel formulations, compressor oils, and high-performance lubricants for heavy transport applications.

Wholesale Premium SJ Grade Gasoline Engine Oil

Wholesale Premium SJ Grade Gasoline Engine Oil - Superior Protection and Performance Supplier, Exporter

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China Longhai CH-4 Heavy-Duty Diesel Oil

China Longhai CH-4 Heavy-Duty Diesel Oil – Advanced Wear Protection & Engine Cleanliness Exporter, Exporters

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China Longhai CJ-4 Synthetic Diesel Oil

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Wholesale Longhai CI-4 PLUS Premium Diesel Oil

Wholesale Longhai CI-4 PLUS Premium Diesel Oil – Ultimate Engine Protection & Fuel Efficiency Supplier, Exporters

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Wholesale High-performance hydraulic oil

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China High-efficiency air compressor oil

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China LONGHEAD SP Premium Motor Oil

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China Longhai CF-4 Diesel Engine Oil

China Longhai CF-4 Diesel Engine Oil – High-Temperature Cleanliness & Heavy-Duty Protection Exporter, Exporters

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